(http://leetcode.com/2011/01/find-k-th-smallest-element-in-union-of.html) Given two sorted arrays A, B of size m and n respectively. Find the k-th smallest element in the union of A and B. You can assume that there are no duplicate elements. O(lg m + lg n) solution: 1. M...
Set of Patterns to solve many algorithmic questions of similar type on LeetCode leetcodetriebacktrackingbinary-search-treearraysdynamic-programmingbreadth-first-searchgreedy-algorithmsdepth-first-searchunion-finddivide-and-conquertwo-pointersbitwise-operationalgorithmic-questions ...
75 BLIND CURATED LEETCODE QUESTIONS: Array Two Sum #1 👯 ❓: Given an array of integers nums & an integer target, return indices of the two numbers such that they add up to target. 🐣: Given nums = [2, 7, 11, 15], target = 9, Because nums[0] + nums[1] = 2 + 7 = ...
[LeetCode] Graph Valid Tree [Union Find] Problem Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges make up a valid tree. Example Given n = 5 and edges = [[0, 1], [0, 2], ...
Faster Union Find方法2:Union Find Based on Quick Union 参考:https://leetcode.com/discuss/69572/easiest-java-solution-with-explanations Quick Union is Faster than Quick Find The idea is simple. To represent a list of islands, we use trees. i.e., a list of roots. This helps us find the...
LeetCode题目:685. Redundant Connection II In this problem, a rooted tree is adirected 有向图graph such that,there is exactly one node (the root) for which all other nodes are descendants of this node, plus every node has exactly one parent, except for the root node which has no parents...